Greater Knapweed
Centaurea scabiosa
Also listed as Acrocentron scabiosa, Colymbada scabiosa
Also known as Scabious Knapweed, Rough Knapweed, Hardheads
Climate Match for your location
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A showy perennial wildflower with purple-pink thistle-like flower heads and deeply cut, gray-green foliage. Attractive to bees and butterflies, thriving in sunny, dry conditions with minimal care.
Why grow it
Greater knapweed offers earlier and longer bloom than some related Centaurea species, flowering from mid-summer into fall. It tolerates poor, well-drained soils and rocky sites where many ornamentals struggle, making it useful for xeriscaping or naturalized plantings. The flower heads provide reliable nectar and pollen for native pollinators over an extended season.
Watch out for
Plants may take two years to establish strong root systems before flowering prolifically, so initial establishment patience is needed. In areas with adequate moisture and rich soil, plants can self-seed readily and spread beyond intended boundaries, requiring periodic deadheading or removal if containment is desired.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Asteraceae
Native Range
Europe and western Asia
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
A showy perennial wildflower with purple-pink thistle-like flower heads and deeply cut, gray-green foliage. Attractive to bees and butterflies, thriving in sunny, dry conditions with minimal care.
Climate Match for your location
See how well Greater Knapweed grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Greater knapweed offers earlier and longer bloom than some related Centaurea species, flowering from mid-summer into fall. It tolerates poor, well-drained soils and rocky sites where many ornamentals struggle, making it useful for xeriscaping or naturalized plantings. The flower heads provide reliable nectar and pollen for native pollinators over an extended season.
Watch out for
Plants may take two years to establish strong root systems before flowering prolifically, so initial establishment patience is needed. In areas with adequate moisture and rich soil, plants can self-seed readily and spread beyond intended boundaries, requiring periodic deadheading or removal if containment is desired.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Asteraceae
Native Range
Europe and western Asia
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
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